Flashfig, what's wrong?

Hardware MikroTik hardware general
1

I know by heart the official manual, but it does not provide the necessary clarifications. Judging by the amount of similar problems is absolutely necessary to expand the manual. Current manual is not step-by-step, it’s a realy quest!

I have some RB433, RB433AH, RB750 and want to preconfigure them by flashfig. Routers are already used (it’s not first start). Two days of testing are failed.

  1. Manual does not explain the relationship between factory (or current) settings and settings downloaded via flashfig. Should I reset ROS to factory default before flashfig use? Should I set “No default configuration” before reset configuration, reboot and flashfig use? What if set, and what if unset? What we get in the end after flashfig: summ of current config and flashfig config, or only flashfig config on fully clean ROS, or summ of factory and flashfig config?

  2. “Log shows “RouterBOARD Flashfigged” and RouterBOARD should make sound/LED signal, now it is safe to unplug the router.”
    What sound? What is “success sound” and what is “fail sound” in the Flashfig diagram? What signal? What is “unplag”: ethernet or power?
    I have log message “RouterBOARD Flashfigged” in Flashfig messages window and sound like Morse code “–••••” every 4 seconds from RB beeper. Is it success or fail? This question is actual because in the end I have fully blank ROS. And what is Flashfigged so? Waiting for sound ends (some minutes) or making power reboot give the same result – fully blank ROS.

  3. What should be the content of .rsc file? Only target commands I need, or merge of factory-default commands (from startup script) whith my commands, or merge of factory-default exported configure (from /export) (compact or verbose?) with my commands?
    For example, this is my test.rsc:
    /ip address add address=192.168.33.5/24 interface=ether1 network=192.168.33.0
    /system identity set name=R5
    Through flashfig it does not work (why?), but through terminal or import it success.
    Should I use MilliScript and other horrors for such a simple task?

  4. Does the flashfig realy works through switches or not? What conditions are needed for this? What protocols use? This forum contains diametrically opposed statements. Someone says that flashfig works even through tunnels.
    –
    So, how to flashfig a used router? Step-by-step, with necessary conditions.